.TH std::deque::pop_back 3 "2024.06.10" "http://cppreference.com" "C++ Standard Libary"
.SH NAME
std::deque::pop_back \- std::deque::pop_back

.SH Synopsis
   void pop_back();

   Removes the last element of the container.

   Calling pop_back on an empty container results in undefined behavior.

   Iterators and references to the erased element are invalidated. The end() iterator
   is also invalidated. Other references and iterators are not affected.

.SH Parameters

   \fI(none)\fP

.SH Return value

   \fI(none)\fP

.SH Complexity

   Constant.

.SH Exceptions

   Throws nothing.

.SH Example


// Run this code

 #include <deque>
 #include <iostream>

 template<typename T>
 void print(T const& xs)
 {
     std::cout << "[ ";
     for (auto const& x : xs)
         std::cout << x << ' ';
     std::cout << "]\\n";
 }

 int main()
 {
     std::deque<int> numbers;

     print(numbers);

     numbers.push_back(5);
     numbers.push_back(3);
     numbers.push_back(4);

     print(numbers);

     numbers.pop_back();

     print(numbers);
 }

.SH Output:

 [ ]
 [ 5 3 4 ]
 [ 5 3 ]

.SH See also

   pop_front removes the first element
             \fI(public member function)\fP
   push_back adds an element to the end
             \fI(public member function)\fP
